Ideal for USA LP style guitar like LP, SG, ES-335 etc. If your guitar is Epiphone style and use imperial inch size pots, it will work as well Inch size, fine 24 splines, will fit most American made 6mm(15/64 inch) split shaft potentiometers like CTS/Fender/DiMarzio/Bourns, will NOT fit metric size potentiometers like Alpha Inner hole diameter: 6mm(15/64 inch), base outer diameter: 26mm(1-1/32 inch), height: 13mm(33/64 inch) Made of acrylic
